Hi,
MicroSD card problems for me too. We have two Kobo Touch readers at our home and both readers are updated to the newest 1.9.12 firmware and the returning to home screen on page turns on reading any epub or kepub still happens on both devices.
I already did reset one device and went through a full update process and even reformatted my one of my SD cards and loaded the books on it to to have no luck resolving this issue.
My cards are cheap PNY cards which I got from amazon last week.
http://www.amazon.com/PNY-MicroSD-Cl...8597298&sr=8-1
I have three of these "PNY 2GB Class 4" MicroSD cards and all cards will cause the same problem.
All you need to do in-order to reproduce the problem on either device is:
1. Inert a MicroSD card in the device.
2. Open a book on the MicroSD card or on the device internal storage. (kepub or epub).
3. Wait approximately 1 minute. ** The delay is important, otherwise the pages will turn as long as you keep tapping next page or previous page.
4. Tap next page and the book closes and brings me back to the home screen. Every time on both devices at my home.
I have smaller than default font size and line spacing on my setup. My slow and dyslexic reading requires at least a minute to read the page. I can not read and turn even one page without being kicked out to the home screen.
If I read a book that is on the SD card, it is even worse. Sometimes all the books on the SD card disappears from the device. I have to unplug and re-plug in the SD card to see the books again. It is horrible. I am thinking of downgrading one device to 1.9.10 to see if I can survive with it and still use the books on my SD cards.
On another note, does anyone else find having to go through a menu to access the dictionary annoying? I may be just the lazy type who dislike extra tapping. I liked the way you could simply tap a single button and access the dictionary on 1.9.9 and earlier firmware, prior to the introduction of the translation feature. Just a thought: if we must go through a single menu every time to do something to a selected word why have the menu closed once the word is selected. It would make much more sense to have the menu kept open.
I still love this device. The feel and clarity of this unit is very nice. That is why we have two in our home. Hopefully this really crippling SD card problem will be fixed soon.